This topic contains a solution. Click here to go to the answer
|
|
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).
Did you know?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
![Varicosis. (a) Varicose veins develop due to the failure of valves in the superficial veins of the l](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_14_26_10024713.jpeg)
![When the United States gets stuck over a controversial issue—usually something a divided Congress ca](https://biology-forums.com/gallery/47/medium_262797_12_08_15_1_37_16_22180672.png)